Ashcroft 61379A4LLLV/100 Pressure Gauge 6 in 30-0-100 Psi

Product Description

The ASHCROFT 61379A4LLLV/100 is an analog pressure gauge with a 6-inch dial and a compound pressure range of 30 inches vacuum to 0 to 100 psi. The lower-mount, 1/2-inch threaded connection makes it straightforward to install directly into a pipeline or manifold port. The aluminum case keeps overall weight low at 3.13 pounds while providing durable housing for field and mechanical room environments. Bronze wetted parts resist corrosion in common process media. Accuracy is rated at 0.5% of full scale, meeting the demands of HVAC, plumbing, and light industrial pressure monitoring applications. No liquid filler is used, keeping the unit clean and easy to read.

This gauge is suited for residential and commercial HVAC systems, hydronic heating and cooling piping, compressed air lines, and general plumbing pressure monitoring. The 6-inch dial face provides a large, easy-to-read analog display at typical panel or pipe-mounted viewing distances. The lower-mount configuration is the standard choice for vertical pipe runs and panel cutout installations. Licensed HVAC technicians, plumbers, and mechanical contractors are the typical installers for this type of instrument.

Key Features

• Compound range of 30 inches vacuum to 0 to 100 psi covers both vacuum and positive pressure readings
• 6-inch analog dial for clear readability at a distance
• 1/2-inch lower-mount threaded connection for direct pipe or manifold installation
• Bronze wetted parts provide corrosion resistance in common process fluids
• Aluminum case reduces overall weight while protecting internal components
• 0.5% of scale accuracy for reliable process measurement
• Non-liquid-filled design for clean, low-maintenance service

Compatibility

Designed as an OEM-style or replacement analog pressure gauge for residential and commercial HVAC, hydronic, plumbing, and light industrial piping systems that require a 1/2-inch lower-mount connection and a 6-inch dial face.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical contractor in accordance with applicable local codes and ASME B40.100 gauge installation guidelines. Isolate and depressurize the line fully before removing an existing gauge or threading in the new fitting. Use an appropriate thread sealant on the 1/2-inch NPT connection and avoid overtightening, which can damage the socket. Verify the pressure range of the system falls within 25% to 75% of the gauge full-scale value for optimal accuracy and service life.